What caused the Ordovician extinction event 450 million years ago, the second-largest of the five major extinction events in Earth's history.

What caused the Devonian extinction event 370 million years ago, one of five major extinction events in the history of Earth.

K/T extinction event. What was it like on the fateful apocalyptic day 65 million years ago when the asteroid that led to the extinction of dinosaurs arrived and hit Earth?

K/T extinction event. What was the last year of dinosaurs' existence on Earth like?

What caused the Permian extinction event, better known as the Great Dying, 250 million years ago, the Earth's most severe known extinction event.

What caused the Triassic extinction event 200 million years ago.

What caused the Quaternary extinction event during the late Pleistocene some 75.000 years ago that killed off the giant mammals and almost even made the early human race extinct.

Could humans survive the next extinction event and what could this event be.